Heat/defrost motor quit

I would like to defrost my windows, it's a need now, not a want, to have my fan working. it started working/quitting intermittently over the summer after our ac hose blew off in the engine due to a cracked rad seal and now it seems to sort of come on when we slam the door or if we go over a bump. but when it does start working, you can hear the motor or the fan slowly winding down and then all you hear is a knocking clicking noise until it stops completely....does that sound to you like the bearings in the motor (is that same as the motor resistor) or could it be an electrical short....?

Thank you guest, I crammed myself up under the dash last week and that was exaclty what the problem was!Thank you guest, I crammed myself up under the dash last week and that was exaclty what the problem was!

2 Answers

Anonymous

Re: heat/defrost motor quit

I have a 99 sunfire and if you look under the dash on the passenger side, there is a circle shaped cover over the fan. on mine the problem was that the wires behind it came loose. jiggling them in certain ways would make it come on again full strength. i simply taped the wires into the right position so they would connect, but i'm sure there's a better more permanant solution if you have the right tools to get the cover all the way off and look at the wires. apparantly this is a common problem among sunfires.

Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.

sounds like a blowermotor to be sure a easy check is to use a testlight and hook clip to blowermoter ground wire and backprobe powerwire gound will be black power purple or orange. if it lights with speed on high motor bad u can tap with hammer or back of screwdriver see if it runs.

Check it with a test light or Multimeter for power to blower motor first, with switch on high. If no power to motor, problem is elsewhere. Here's a link that will help you. Click on the pictures to expand.